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Bookmark or Share- A family has 3 children. Find the probabilities. A) all boys B) All ...We have 3 children, with each one possibly being a boy or a girl. And so for each child, the probability of being a boy is #1/2# as is the probability of being a girl #1/2#
- Valence Electrons - Chemistry - SocraticValence electrons are the electrons present in the outermost shell of an atom.. You can easily determine the number of valence electrons an atom can have by looking at its Group in the periodic table.
- A man wearing a bulletproof vest stands still on roller ... - SocraticA man wearing a bulletproof vest stands still on roller skates. The total mass is 80 kg. A bullet of mass 20 grams is fired at 400 m/s. It is stopped by the vest and falls to the ground. What is the velocity of the man?
- Combinations and Permutations - Statistics - SocraticAt a restaurant, you can choose from 2 appetizers, 4 main courses, and 3 desserts. How many different meals, each consisting of one appetizer, one main course, and one dessert, can be created?
- A street light is mounted at the top of a 15-ft-tall pole. A man 6 ft ...20/3 (ft)/s in this diagram, x is the distance from the man to the pole, and y is the distance from the tip of the man's shadow to the pole. i assume the man and pole are standing straight up, which means the 2 triangles are similar. by similarity, (y-x)/y=6/15 15(y-x)=6y 15y-15x=6y 9y=15x y=5/3x differentiate both sides with respect to t or time. dy/dt=5/3dx/dt you know dx/dt=4(ft)/s because ...
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